The alternator of your car is a small, mobile generator that keeps your battery charged. Without it, your car's battery will eventually discharge and not have enough juice to start the vehicle. Knowing more about this device may help you determine when auto repairs are necessary. 

All You Need to Know About Alternators

What Are They?

The alternator is the centerpiece of your vehicle's charging system. It is connected to the engine via a serpentine or alternator belt, which cranks the unit whenever the motor is running. This creates an electric current, which recharges the battery after it has expended a considerable part of its voltage starting your car.

While the vehicle is running, the alternator supplies the necessary electricity to power the lights, radio, and other electrical components.

What Kind of Problems Do They Experience?

Some of the most common auto repair issues involving the alternator happen within its connections to other components. For instance, if the alternator belt breaks, it won't generate a current. If the wires coming off the alternator become frayed or disconnected, the battery won’t charge. When electrical components like the diode or fuse malfunction, the alternator could also stop working.

What Are Some Signs You Need Auto Repairs?

If your battery is not charging, it's often a problem with the alternator. The unit may also be dead. In either case, the car won't start, and won't run for long even after a jump-start.

If your battery is receiving only a low charge, the dashboard light will illuminate. This often indicates that the belt is slipping or the wired connection is weak. If your alternator is faulty, you may hear whining or rattling, which means the pulley may be loose or the bearing is worn out.

If your alternator isn’t working, a jump-start won't be enough to get you back on the road. Contact Craig's Towing & Repair, an experienced, family-owned towing service and auto shop in La Crosse County, WI, for prompt, reliable auto repairs. They also serve Baraboo, Lake Delton, and Wisconsin Dells. Learn more about their repair shop online or call (608) 784-1638 to make a service appointment.